Portable rack dolly, retrofit kit and methods of use

ABSTRACT

A system comprises a wheel assembly including a wheel shaft and first and second wheels rotationally coupled to the wheel shaft; a first bracket coupled to a device rack and including a first open slot, the first open slot including a receiving portion configured to receive the wheel shaft at a first position, a delivery portion configured to deliver the wheel shaft upon tilting the rack forwards, and a locking portion configured to secure the wheel shaft upon tilting the rack backwards; and a second bracket configured to be coupled to the rack on a second side and including a second open slot, the second open slot including a receiving portion configured to receive the wheel shaft at a second position, a delivery portion configured to deliver the wheel shaft upon tilting the rack forwards, and a locking portion configured to secure the wheel shaft upon tilting the rack backwards.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims benefit of and hereby incorporates by reference U.S. Provisional Patent Application Ser. No. 62/598,991, entitled “Portable Rack Dolly,” filed on Dec. 14, 2017, by inventor Farley Dlugosz.

TECHNICAL FIELD

This invention relates generally to dolly carts, and more particularly provides a portable rack dolly, retrofit kit and methods of use.

BACKGROUND

Moving rack-mounted systems is cumbersome. Installers typically use shipping support brackets to walk racks from outside a shelter to inside the shelter. It would be helpful to have a solution to more easily move rack-mount systems without large bulky moving equipment.

SUMMARY

In some embodiments, a system is configured to modify a device rack into a portable rack dolly. The system comprises a wheel assembly, the wheel assembly including a wheel shaft, a first wheel rotationally coupled to the wheel shaft, and a second wheel rotationally coupled to the wheel shaft, the wheel shaft including a first shaft position and a second shaft position; a first bracket configured to be coupled to a device rack on a first side at a first low position, the first bracket including a first open slot configured to cooperate with the first shaft position on the wheel shaft, the first open slot including a first receiving portion configured to receive the wheel shaft at the first shaft position, a first delivery portion configured to deliver the wheel shaft upon tilting the device rack forwards, and a first locking portion configured to secure the wheel shaft upon tilting the device rack backwards; and a second bracket configured to be coupled to the device rack on a second side at a second low position, the second bracket including a second open slot configured to cooperate with the second shaft position on the wheel shaft, the second open slot including a second receiving portion configured to receive the wheel shaft at the second shaft position, a second delivery portion configured to deliver the wheel shaft upon tilting the device rack forwards, and a second locking portion configured to secure the wheel shaft upon tilting the device rack backwards.

In some embodiments, the wheel shaft may include a first groove at the first shaft position configured to engage with the first open slot, and a second groove at the second shaft position configured to engage with the second open slot. A distance between the first groove and the second groove may be the same as a distance between the first bracket and the second bracket when affixed to the device rack. Each of the first receiving portion and the second receiving portion may include an initial portion of the first open slot and the second open slot, respectively. Each of the first delivery portion and the second delivery portion may include a downwardly angled portion configured to allow gravity to drop the wheel shaft downward as the device rack is tilted forwards. The downwardly angled portion may include a curved portion. Each of the first locking portion and the second locking portion may include a horizontal or upwardly angled portion configured to allow the weight of the device rack to secure the wheel shaft as the device rack is tilted backwards. The horizontal or upwardly angled portion may include a curved portion. The system may include a handle assembly coupled to the device rack, the handle assembly being configured to support tilting the device rack forwards and backwards. The handle assembly may include a first handle assembly attached to a first post and a second handle assembly attached to a second post. The device rack may include telecommunication equipment. The height of the first receiving portion and the second receiving portion may be about the same as the height of the wheel shaft. The first bracket may include a first gusset bracket and the second bracket may include a second gusset bracket.

In some embodiments, the present invention provides a portable rack dolly system. The portable rack dolly system includes a device rack with a first post having a top end and a bottom end, a second post having a top end and a bottom end, a first crossbar attached across the first post and the second post, and a base attached to the bottom end of the first post and the bottom end of the second post, the base configured to maintain the device rack in a stable upright position; a wheel assembly, the wheel assembly including a wheel shaft, a first wheel rotationally coupled to the wheel shaft, and a second wheel rotationally coupled to the wheel shaft, the wheel shaft including a first shaft position and a second shaft position a first bracket configured to be coupled to the device rack on a first side at a first low position, the first bracket including a first open slot configured to cooperate with the first shaft position on the wheel shaft, the first open slot including a first receiving portion configured to receive the wheel shaft at the first shaft position, a first delivery portion configured to deliver the wheel shaft upon tilting the device rack forwards, and a first locking portion configured to secure the wheel shaft upon tilting the device rack backwards; and a second bracket configured to be coupled to the device rack on a second side at a second low position, the second bracket including a second open slot configured to cooperate with the second shaft position on the wheel shaft, the second open slot including a second receiving portion configured to receive the wheel shaft at the second shaft position, a second delivery portion configured to deliver the wheel shaft upon tilting the device rack forwards, and a second locking portion configured to secure the wheel shaft upon tilting the device rack backwards.

In some embodiments, the wheel shaft may include a first groove at the first shaft position configured to engage with the first open slot, and a second groove at the second shaft position configured to engage with the second open slot. Each of the first delivery portion and the second delivery portion may include a downwardly angled portion configured to allow gravity to drop the wheel shaft downward as the device rack is tilted forwards. Each of the first locking portion and the second locking portion may include a horizontal or upwardly angled portion configured to allow the weight of the device rack to secure the wheel shaft as the device rack is tilted backwards. The portable rack dolly system may include a handle assembly coupled to the device rack, the handle assembly being configured to support tilting the device rack forwards and backwards. The handle assembly may include a first handle assembly attached to the first post and a second handle assembly attached to the second post. The height of the first receiving portion and the second receiving portion may be about the same as the height of the wheel shaft.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1A depicts a portable rack dolly system, in accordance with an embodiment of the present invention.

FIG. 1B depicts an upper vertical support member, in accordance with an embodiment of the present invention.

FIG. 1C depicts a lower vertical support member, in accordance with an embodiment of the present invention.

FIG. 1D depicts a base plate, in accordance with an embodiment of the present invention.

FIG. 1E depicts an attachment bracket, in accordance with an embodiment of the present invention.

FIG. 1F depicts a top crossbar, in accordance with an embodiment of the present invention.

FIG. 1G depicts an intermediate crossbar, in accordance with an embodiment of the present invention.

FIG. 1H depicts an upper rack section, in accordance with an embodiment of the present invention.

FIG. 1I depicts a lower rack section, in accordance with an embodiment of the present invention.

FIG. 1J depicts a device rack, in accordance with an embodiment of the present invention.

FIG. 1K depicts a portable rack dolly system, in accordance with an embodiment of the present invention.

FIG. 2 depicts a handle assembly, in accordance with an embodiment of the present invention.

FIG. 3 depicts a first gusset bracket, in accordance with an embodiment of the present invention.

FIG. 4 depicts a second gusset bracket, in accordance with an embodiment of the present invention.

FIG. 5 depicts a wheel assembly, in accordance with an embodiment of the present invention.

FIG. 6 is a flowchart illustrating a method of retrofitting a pre-existing device rack, in accordance with an embodiment of the present invention.

DETAILED DESCRIPTION

The following description is provided to enable a person skilled in the art to make and use various embodiments of the invention. Modifications are possible. The generic principles defined herein may be applied to the disclosed and other embodiments without departing from the spirit and scope of the invention. The claims are not intended to be limited to the embodiments disclosed, but are to be accorded the widest scope consistent with the principles, features and teachings herein.

FIG. 1A depicts a portable rack dolly system 100, in accordance with an embodiment of the present invention. The portable rack dolly system 100 includes a first post 102 a, a second post 102 b, one or more top crossbars 104, one or more intermediate crossbars 106, a base 108, one or more component support rails 112, a first handle assembly 114 a, a second handle assembly 114 b, a first gusset bracket 116 a, a second gusset bracket 116 b, and a wheel assembly 118. In some embodiments, the first handle assembly 114 a, the second handle assembly 114 b, the first gusset bracket 116 a, the second gusset bracket 116 b and the wheel assembly 118 make up a retrofit kit configured to retrofit, upgrade and/or otherwise modify a device rack (e.g., a rack mount system with or without components thereon) to create the portable rack dolly system 100.

For convenience, the element character “a” is being used to refer to elements involving the first post 102 a (or the right side of FIG. 1), and the element character “b” is being used to refer to elements involving the second post 102 b (or the left side of FIG. 1). Similarly, the element character “c” is being used to refer to elements involving the front of the portable rack dolly system 100, and the element character “d” is being used to refer to elements involving the rear of the portable rack dolly system 100.

The first post 102 a includes a single vertical support member or multiple vertical support members coupled together. As shown in FIG. 1, the first post 102 a includes a lower vertical support member 122 a and an upper vertical support member 124 a coupled together using an attachment mechanism 126 a (hidden due to the perspective view, but in some embodiments including a mirror image of the attachment mechanism 126 b on the second post 102 b). The attachment mechanism 126 a may include an attachment bracket affixed to the lower vertical support member 122 a and to the upper vertical support member 124 a using screws, bolts (e.g., shipping bolts), nuts and bolts, welding, etc. In some embodiments, the lower vertical support member 122 a and the upper vertical support member 124 a may be attached to each other without a bracket 126 a, e.g., via welding, bolts (e.g., shipping bolts), nuts and bolts, screws, etc. In some embodiments, the lower vertical support member 122 a and the upper vertical support member 124 a may be shaped to slideably engage within each other to increase and/or decrease the height of the portable rack dolly system 100.

The second post 102 b includes a single vertical support member or multiple vertical support members coupled together. As shown in FIG. 1, the second post 102 b includes a lower vertical support member 122 b and an upper vertical support member 124 b coupled together using an attachment mechanism 126 b. The attachment mechanism 126 b may include an attachment bracket affixed to an upper portion of the lower vertical support member 122 b and to a lower portion of the upper vertical support member 124 b using screws, bolts (e.g., shipping bolts), nuts and bolts, welding, etc. In some embodiments, the lower vertical support member 122 b and the upper vertical support member 124 b may be attached to each other without a bracket 126 b, e.g., via welding, bolts (e.g., shipping bolts), nuts and bolts, screws, etc. In some embodiments, the lower vertical support member 122 b and the upper vertical support member 124 b may be shaped to slideably engage within each other to increase and/or decrease the height of the portable rack dolly system 100. In some embodiments, the first post 102 a and the second post 102 b may be substantially identical. In some embodiments, the first post 102 a and the second post 102 b may be mirror images of each other.

For the first post 102 a, each of the lower vertical support member 122 a and the upper vertical support member 124 a may have support rail attachment points 120 a configured to affix one or more component support rails 112 a. The attachment points 120 a may include screw holes, holes for receiving bolts there-though, attachment clips, etc. The component support rails 112 a may be configured to support devices such as system blades, telecommunications equipment, audio equipment, etc. Similarly, for the second post 102 b, each of the lower vertical support member 122 b and the upper vertical support member 124 b may have support rail attachment points 120 b configured to affix one or more component support rails 112 (not shown on the second post 102 b). The attachment points 120 b may include screw holes, holes for receiving bolts there-though, attachment clips, etc. As shown in FIG. 1, only the first post 102 a has component support rails 112 a, although it is possible for both the first post 102 a and the second post 102 b to have component support rails 112.

For the first post 102 a, each of the lower vertical support member 122 a and the upper vertical support member 124 a may further include attachment points 128 a (hidden by the first gusset bracket 116 a) configured to affix the base 108 thereto. The attachment points 128 a may include screw holes, holes for receiving bolts 134 a (hidden by the first gusset bracket 116 a) therethrough, attachment clips, etc. As shown, the base 108 is affixed to the lower attachment points 128 a in the lower vertical support member 122 a. The base 108 may include a platform, legs, and/or other bases. Similarly, for the second post 102 b, each of the lower vertical support member 122 b and the upper vertical support member 124 b may further include attachment points 128 b configured to affix the base 108 thereto. The attachment points 128 b may include screw holes, holes for receiving bolts 134 b therethrough, attachment clips, etc. As shown, the base 108 is affixed to lower attachment points 128 a in the lower vertical support member 122 a.

For the first post 102 a, each of the lower vertical support member 122 a and the upper vertical support member 124 a may further include attachment points 130 a (hidden due to the perspective view and hidden by bolt 132 a, but in some embodiments including a mirror image of the attachment points 130 b on the second post 102 b) configured to affix the one or more top crossbars 104. The attachment points 130 a may include screw holes, holes for receiving bolts 132 a therethrough, attachment clips, etc. Similarly, for the second post 102 b, each of the lower vertical support member 122 b and the upper vertical support member 124 b may further include attachment points 130 b configured to affix the one or more top crossbars 104. The attachment points 130 b may include screw holes, holes for receiving bolts 132 b therethrough, attachment clips, etc. As shown, portable rack dolly system 100 includes two top crossbar members 104, namely, a first top crossbar member 104 c positioned across the front of the first post 102 a and the second post 102 b, and a second top crossbar 104 d positioned across the back of the first post 102 a and the second post 102 b. In the illustrated embodiment, only the upper vertical support members 124 a and 124 b include attachment points 130 a and 130 b. Although the one or more top crossbars 104 are shown positioned in the front and back of the first and second posts 102 a and 102 b, the one or more top crossbars 104 may be positioned alternatively or additionally in between the front and back of the first and second posts 102 a and 102 b.

For the first post 102 a, each of the lower vertical support member 122 a and the upper vertical support member 124 a may further include one or more attachment points 136 a (hidden due to the perspective view, but in some embodiments including a mirror image of the one or more attachment points 136 b on the second post 102 b) configured to affix the one or more intermediate crossbars 106. In the illustrated embodiment, only the lower portion of the upper vertical support member 124 a includes the one or more attachment points 136 a. Similarly, for the second post 102 b, each of the lower vertical support member 122 b and the upper vertical support member 124 b may further include one or more attachment points 136 b configured to affix the one or more intermediate crossbars 106. In the illustrated embodiment, only the lower portion of the upper vertical support member 124 b includes the one or more attachment points 136 b. The illustrated embodiment in FIG. 1 depicts only one intermediate crossbar 106 positioned in front of the lower portion of the upper vertical support member 124 b. In some embodiments, the portable rack dolly system 100 may include additional intermediate crossbars 106, which may be positioned at various positions across the lower vertical support members 122 a and 122 b, or across the upper vertical support members 124 a and 124 b, whether positioned in front, in back, or in between.

In some embodiments, the first post 102 a, the second post 102 b, the one or more top crossbars 104, the one or more intermediate crossbars 106 and the base 108 form a device rack for supporting multiple system components, such as system blades, telecommunications equipment, audio equipment, etc.

A first handle assembly 114 a may be coupled to the first post 102 a. The first handle assembly 114 a may include a first handle support rail 144 a and a first handle 146 a. In some embodiments, the first handle support rail 144 a may include attachment points 140 a configured to be coupled to attachment points 138 a on the upper vertical support member 124 a by an attachment mechanism 142 a. In some embodiments, the attachment points 140 a on the first handle support rail 144 a and the attachment points 138 a on the upper vertical support member 124 a may include one or more holes, e.g., one or more screw holes or one or more holes to receive one or more bolts. In some embodiments, the attachment mechanism 142 a may include screws, nuts and bolts, clips, etc. The first handle 146 a may be affixed to an attachment point 148 a at or near the distal end of the first handle support rail 144 a. In some embodiments, the attachment point 148 a in the first handle support rail 144 a may include a screw hole to receive a screw formed in the end of the first handle 146 a. In some embodiments, the first handle support rail 144 a and the first handle 146 a may be integrally formed or substantially permanently rotationally affixed to each other. Similarly, a second handle assembly 114 b may be coupled to the second post 102 b. The second handle assembly 114 b may include a second handle support rail 144 b and a second handle 146 b. In some embodiments, the second handle support rail 144 b may include attachment points 140 b configured to be coupled to attachment points 138 b on the upper vertical support member 124 b by an attachment mechanism 142 b. In some embodiments, the attachment points 140 b on the second handle support rail 144 b and the attachment points 138 b on the upper vertical support member 124 b may include one or more holes, e.g., one or more screw holes to receive one or more screws or one or more holes to receive one or more bolts. In some embodiments, the attachment mechanism 142 a may include screws, nuts and bolts, clips, etc. The second handle 146 b may be affixed to an attachment point 148 b at or near the distal end of the second handle support rail 144 b. In some embodiments, the attachment point 148 b in the second handle support rail 144 b may include a screw hole to receive a screw formed in the end of the second handle 146 b. In some embodiments, the second handle support rail 144 b and the second handle 146 b may be integrally formed or substantially permanently rotationally affixed to each other.

Other handle assemblies may be used instead of or in addition to the first handle assembly 114 a and the second handle assembly 114 b. For example, the portable rack dolly system 100 may include a handle assembly with a centered single handle, where the handle assembly is coupled to at least one of the one or more top crossbars 104, coupled to the first post 102 a and to the second post 102 b, coupled to at least one of the one or more intermediate crossbars 106, etc. In some embodiments, the portable rack dolly system 100 may include no handle assembly, and the installer may grip at least one of the one or more top crossbars 104, or at least one of the one of the one or more intermediate crossbars 106. In some embodiments, one of the one or more top crossbars 104 or one of the one or more intermediate crossbars 106 may have a circular cross section for a more comfortable grip. In some embodiments, a rubber grip or rotating handle may be positioned on the one of the one or more top crossbars 104 or the one of the one or more intermediate crossbars 106. In some embodiments, there may be additional handle assemblies.

The first gusset bracket 116 a may be coupled to the first post 102 a. As shown, the first gusset bracket 116 a is affixed to a low position, e.g., the lowest portion, of the lower vertical support member 122 a. In some embodiments, attachment points 162 a in the first gusset bracket 116 a are coupled to attachment points 160 a in the first post 102 a by an attachment mechanism 164 a. In some embodiments, the attachment points 162 a on the first gusset bracket 116 a and the attachment points 160 a on the lower vertical support member 122 a may include one or more holes, e.g., one or more screw holes or one or more holes to receive one or more bolts. In some embodiments, the attachment mechanism 164 a may include screws, bolts (e.g., shipping bolts), nuts and bolts, clips, etc. Similarly, the second gusset bracket 116 b may be coupled to the second post 102 b. As shown, the second gusset bracket 116 b is affixed to a low position, e.g., the lowest portion, of the lower vertical support member 122 b. In some embodiments, attachment points 162 b in the second gusset bracket 116 b are coupled to attachment points 160 b in the second post 102 b by an attachment mechanism 164 b. In some embodiments, the attachment points 162 b on the second gusset bracket 116 b and the attachment points 160 b on the lower vertical support member 122 b may include one or more holes, e.g., one or more screw holes or one or more holes to receive one or more bolts. In some embodiments, the attachment mechanism 164 b may include screws, bolts (e.g., shipping bolts), nuts and bolts, clips, etc.

In some embodiments, the first gusset bracket 116 a may be coupled to a first side of the base 108 instead of or in addition to being coupled to the first post 102 a, and the second gusset bracket 116 b may be coupled to a second side of the base 108 instead of or in addition to being coupled to the second post 102 b. In some embodiments, the first gusset bracket 116 a may be coupled to a first side of the device rack at a first low position, and the second gusset bracket 116 b may be coupled to a second side of the device rack at a second low position. In some embodiments, the low-ness of the positions are defined by the radius of the wheels 154 a and 154 b and the dimensions and positions of the open slots 150 a and 150 b.

The first gusset bracket 116 a includes a first open slot 150 a. The second gusset bracket 116 b includes a second open slot 150 b. The first gusset bracket 116 a and the second gusset bracket 116 b may be configured to ensure that the distance between the first open slot 150 a and the second open slot 150 b achieve a predetermined distance therebetween when the first gusset bracket 116 a is affixed to the first post 102 a and the second gusset bracket 116 b is affixed to the second post 102 b. The first open slot 150 a and the second open slot 150 b may include similar or identical shapes. As shown, each of the first open slot 150 a and the second open slot 150 b may have a downwardly diagonal portion beginning at an open end and a substantially horizontal portion at the terminal end. Notably, the directions refer to directions of the first open slot 150 a and the second open slot 150 b when the first gusset bracket 116 a and the second gusset bracket 116 b are affixed to the device rack, and the device rack is in its generally upright position. The width of the first open slot 150 a and the second open slot 150 b may be substantially consistent and substantially identical.

The wheel assembly 118 may include a wheel shaft 152. A first wheel 154 a may be rotationally coupled to a first end of the wheel shaft 152. A second wheel 154 b may be rotationally coupled to a second end of the wheel shaft 152. In some embodiments, the wheel shaft 152 may include a first groove 156 a (hidden in the perspective view) and a second groove 156 b, and the distance between the grooves 156 a and 156 b may be the same or almost the same as the predetermined distance between the first open slot 150 a and the second open slot 150 b. The diameters of the grooves 156 a and 156 b may be substantially the same as the widths of the first open slot 150 a and the second open slot 150 b, respectively. The ground-to-open-end height of the first open slot 150 a and of the second open slot 150 b may be configured based on the height of the shaft 152 when the first wheel 154 a and the second wheel 154 b are mounted thereon (which is substantially the same as the radius of the wheels 154 a and 154 b). Alternatively, the radius of the first wheel 154 a and of the second wheel 154 b may be configured based on the ground-to-open-end height of the first open slot 150 a and of the second open slot 150 b when affixed to the device rack. Further, the ground-to-terminal-end height of the first open slot 150 a and the second open slot 150 b may be configured based on the radius of the wheels 154 a and 154 b to ensure that the wheels 154 a and 154 b raise the portable rack dolly system 100 at least when tilted rearwards (backwards) without the base 108 interfering.

After mounting the first handle assembly 114 a, the second handle assembly 114 b, the first gusset bracket 116 a, and the second gusset bracket 116 b, the installer can roll the wheel assembly 118 towards the first open slot 150 a and the second open slot 150 b so that the first groove 156 a and the second groove 156 b align with the first open slot 150 a and the second open slot 150 b. The installer can hold the handles and tip the portable rack dolly system 100 forwards (raising the gusset brackets), thereby allowing the wheel shaft 152 to slide down the diagonal portion of first open slot 150 a and of the second open slot 150 b. Then, the installer can tip the portable rack dolly system 100 backwards (lowering the gusset brackets), towards himself, thereby allowing the wheel shaft 152 to slide into the horizontal portions of the first open slot 150 a and the second open slot 150 b until the wheel shaft 152 reaches the terminal ends of the first open slot 150 a and the second open slot 150 b. The installer can push or pull the portable rack dolly system 100 while the weight of the portable rack dolly system 100 is substantially borne by the wheel assembly 118 and while the wheels 154 rotate making movement easier.

After the installer positions the portably rack dolly system 100, the installer can tilt the portable rack dolly system 100 forward until the wheel assembly 118 is raised above the ground. The installer can use his foot or other technique to withdraw the wheel assembly 118 from the first open slot 150 a and the second open slot 150 b. Then, the installer can tilt the portable rack dolly system 100 back down until the base 108 is flat on the ground and stable in place.

It will be appreciated that other slot shapes are also possible. For example, the slot shape may begin with a horizontal portion, continue to a downward portion, and then continue to a horizontal and/or upwardly diagonal portion. Each portion may be straight or curved. Generally, the slot shape should include a receiving portion (which may be the initial slot opening) that receives the wheel shaft 118, a delivery portion that delivers the wheel shaft 118 downward upon a tilting forward, and a locking portion to secure the wheel shaft 118 upon a subsequent tilting backward. As stated above, the directions refer to directions when the first gusset bracket 116 a and the second gusset bracket 116 b are affixed to the device rack, and the device rack is in its generally upright position.

FIG. 1B depicts an upper vertical support member 124 a/124 b, in accordance with an embodiment of the present invention.

FIG. 1C depicts a lower vertical support member 122 a/122 b, in accordance with an embodiment of the present invention.

FIG. 1D depicts a base plate 166, in accordance with an embodiment of the present invention. The base 108 may be formed using a first instance of the base plate 166 positioned in front and across the first lower vertical support member 122 a and the second lower vertical support member 122 b, and a second instance of the base plate 166 positioned in back and across the first lower vertical support member 122 a and the second lower vertical support member 122 b.

FIG. 1E depicts an attachment bracket 126 a/126 b, in accordance with an embodiment of the present invention. The attachment bracket 126 a/126 b may be used to conjoin the first lower vertical support member 122 a to the first upper vertical support member 124 a, and to conjoin the second lower vertical support member 122 b to the second upper vertical support member 124 b.

FIG. 1F depicts a top crossbar 104 c/104 d, in accordance with an embodiment of the present invention.

FIG. 1G depicts an intermediate crossbar 168, in accordance with an embodiment of the present invention. Intermediate crossbar 106 may be the intermediate crossbar 168.

FIG. 1H depicts an upper rack section 170, in accordance with an embodiment of the present invention. As shown, the upper rack section 170 is similar to the upper rack section of the portable rack dolly system 100. The upper rack section 170 includes first upper vertical support member 124 a, second upper vertical support member 124 b, a first top crossbar 104 c coupled across and in front of the first upper vertical support member 124 a and second upper vertical support member 124 b, a second top crossbar 104 d coupled across and in back of the first upper vertical support member 124 a and the second upper vertical support member 124 b, and an intermediate crossbar 168 coupled across the lower portion and in front of the first upper vertical support member 124 a and the second upper vertical support member 124 b.

FIG. 1I depicts a lower rack section 172, in accordance with an embodiment of the present invention. As shown, the lower rack section 172 is similar to the lower rack section of the portable rack dolly system 100. The lower rack section 172 includes first lower vertical support member 122 a, second lower vertical support member 122 b, a first base plate 174 c coupled across and in front of the lower portion of the first lower vertical support member 122 a and the second lower vertical support member 122 b, a second base plate 174 d coupled across and in back of the lower portion of the first lower vertical support member 122 a and the second lower vertical support member 122 b, and an intermediate crossbar 176 coupled across the upper portion and in front of the first lower vertical support member 122 a and the second lower vertical support member 122 b. The first attachment bracket 126 a and the second attachment bracket 126 b may be coupled to the inside of the upper portion of the first lower vertical support member 122 a and to the inside of the upper portion of the second lower vertical support member 122 b, respectively.

In some embodiments, the upper rack section 170 and the lower rack section 172 may be assembled, packaged, and shipped to the installation premise for assembly. In some embodiments, the devices may be attached to one or both of the upper rack section 170 and the lower rack section 172 before shipping to the installation premise. In some embodiments, by using the device rack described herein and by dividing the device rack into two sections, the device rack sections and devices can be sent to the installation premise in 48″ packaging instead of in a 7′6″ wide crate. In some embodiments, the crate can be designed with lighter recyclable materials. The shipping/freight cost rate will go down. In some embodiments, device assemblers can work at eye level, rather than standing on boxes to position devices 7′ above the base. In some embodiments, a single installer can unpack and assemble the device rack. In some embodiments, assemblers and installers will not need forklifts or pallet jacks.

FIG. 1J depicts a device rack 178, in accordance with an embodiment of the present invention. As shown, the device rack 178 includes the upper rack section 170 coupled to the lower rack section 172 by the attachment brackets 126 a and 126 b.

FIG. 1K depicts a portable rack dolly system 180, in accordance with an embodiment of the present invention. The portable rack dolly system 180 is similar to the portable rack dolly system 100, except (1) that the first upper vertical support member 124 a coupled to the first lower vertical support member 122 a are replaced by a first integral vertical support member 182 a, (2) the second upper vertical support member 124 b coupled to the second lower vertical support member 122 b are replaced by a second integral vertical support member 182 b, and (3) there is no intermediate crossbar 106 (although one or more intermediate crossbars can be included).

FIG. 2 depicts the first and second handle assemblies 114 a and 114 b, in accordance with an embodiment of the present invention. As shown, the first handle assembly 114 a includes the first handle support rail 144 a and the first handle 146 a. The first handle support rail 144 a includes attachment points 140 a configured to be coupled to attachment points 138 a on the upper vertical support member 124 a by an attachment mechanism 142 a. The attachment points 140 a on the first handle support rail 144 a include one or more holes, e.g., one or more screw holes or one or more holes to receive one or more bolts. The first handle 146 a is affixed to the attachment point 148 a at or near the distal end of the first handle support rail 144 a. In some embodiments, the attachment point 148 a in the first handle support rail 144 a may include a screw hole to receive a screw formed in the end of the first handle 146 a. In some embodiments, the first handle support rail 144 a and the first handle 146 a may be integrally formed or substantially permanently rotationally affixed to each other. Similarly, the second handle assembly 114 b includes the second handle support rail 144 b and the second handle 146 b. The second handle support rail 144 b includes the attachment points 140 b configured to be coupled to the attachment points 138 b on the upper vertical support member 124 b by an attachment mechanism 142 b. The attachment points 140 b on the second handle support rail 144 b include one or more holes, e.g., one or more screw holes to receive one or more screws or one or more holes to receive one or more bolts. The second handle 146 b may be affixed to an attachment point 148 b at or near the distal end of the second handle support rail 144 b. In some embodiments, the attachment point 148 b in the second handle support rail 144 b may include a screw hole to receive a screw formed in the end of the second handle 146 b. In some embodiments, the second handle support rail 144 b and the second handle 146 b may be integrally formed or substantially permanently rotationally affixed to each other.

FIG. 3 depicts a first gusset bracket 116 a, in accordance with an embodiment of the present invention. As shown, the first gusset bracket 116 a includes a post-coupling portion 302 a, coupled to a return portion 306 a, coupled to a wheel-coupling portion 304 a, and coupled to a base portion 308 a. The post-coupling portion 302 a includes the attachment points 162 a, which may include one or more holes, e.g., one or more screw holes or one or more holes to receive one or more bolts. The wheel-coupling portion 304 a includes the first open slot 150 a. The first open slot 150 a has a downwardly diagonal portion beginning at an open end and a substantially horizontal portion at the terminal end. The width of the first open slot 150 a is substantially consistent. The length of return portion 306 a may be configured to ensure that the distance between the grooves 156 a and 156 b is the same or almost the same as the predetermined distance between the first open slot 150 a and the second open slot 150 b when mounted to the first post 102 a and the second post 102 b respectively. The base portion 308 a is configured to rest on the base 108.

FIG. 4 depicts a second gusset bracket 116 b, in accordance with an embodiment of the present invention. As shown, the second gusset bracket 116 b includes a post-coupling portion 302 b, coupled to a return portion 306 b, coupled to a wheel-coupling portion 304 b, and coupled to a base portion 308 b. The post-coupling portion 302 b includes the attachment points 162 b, which may include one or more holes, e.g., one or more screw holes or one or more holes to receive one or more bolts. The wheel-coupling portion 304 b includes the second open slot 150 b. The second open slot 150 b has a downwardly diagonal portion beginning at an open end and a substantially horizontal portion at the terminal end. The width of the second open slot 150 b is substantially consistent. The length of return portion 306 b may be configured to ensure that the distance between the grooves 156 a and 156 b is the same or almost the same as the predetermined distance between the first open slot 150 a and the second open slot 150 b when mounted to the first post 102 a and the second post 102 b respectively. The base portion 308 b is configured to rest on the base 108.

FIG. 5 depicts the wheel assembly 118, in accordance with an embodiment of the present invention. As shown, the wheel assembly 118 includes the wheel shaft 152. The first wheel 154 a is rotationally coupled to a first end of the wheel shaft 152. The second wheel 154 b is rotationally coupled to a second end of the wheel shaft 152. The wheel shaft 152 includes the first groove 156 a and the second groove 156 b. The distance between the grooves 156 a and 156 b may be the same or almost the same as the distance between the first open slot 150 a and the second open slot 150 b when mounted to the first post 102 a and the second post 102 b respectively. The diameters of the grooves 156 a and 156 b may be substantially the same as the widths of the first open slot 150 a and the second open slot 150 b, respectively. The wheel assembly 118 may be stored in a disassembled state, such that the wheels 154 a and 154 b are kept separate from the wheel shaft 152. The wheel assembly 118 may be assembled when needed. As shown, the wheels 154 a and 154 b may be rotationally coupled to each other inserting the wheel shaft 152 into a central bore 506 in the wheels 154 a and 154 b. A washer 504 may be slid onto the exposed portion of the wheel shaft 152, and a pin or clip may be slid into a locking bore 508 in the wheel shaft 152. Other mechanisms may be used to rotationally couple the wheels 154 a and 154 b to the wheel shaft 152.

FIG. 6 is a flowchart illustrating a method 500 of retrofitting, upgrading and/or modifying a device rack, in accordance with an embodiment of the present invention. In some embodiments, the first handle assembly 114 a, the second handle assembly 114 b, the first gusset bracket 116 a, and the second gusset bracket 116 b may be affixed to a pre-existing device rack. The installation height of the first and second gusset brackets 116 a and 116 b may be selected based on the height of the wheel shaft 152 of the wheel assembly 118.

In step 602, a handle assembly is affixed to the device rack. In some embodiments, the handle assembly may include the first handle assembly 114 a and the second handle assembly 114 b, which may be attached to the first post 102 a and the second post 102 b, respectively. The first handle assembly 114 a may be attached to the first post 102 a using screws, bolts, or nuts and bolts. The second handle assembly 114 b may be attached to the second post 102 b using screws, bolts, or nuts and bolts.

In step 604, gusset brackets are affixed to the device rack. In some embodiments, the gusset brackets may include the first gusset bracket 116 a and the second gusset bracket 116 b, which may be attached to the first post 102 a and the second post 102 b, respectively. The first gusset bracket 116 a may be attached to the first post 102 a using screws, bolts, or nuts and bolts. The second gusset bracket 116 b may be attached to the second post 102 b using screws, bolts, or nuts and bolts.

In step 606, a wheel assembly is installed into the open slots of the gusset brackets. In some embodiments, the wheel assembly includes wheel assembly 118, which includes wheels 154 a and 154 b and wheel shaft 152, and the gusset brackets include gusset brackets 116 a and 116 b. The wheel shaft 152 may be positioned into the first open slot 150 a of the first gusset bracket 116 a and the second open slot 150 b of the second gusset bracket 116 b. In some embodiments, the wheel assembly 118 can be positioned so that the first open slot 150 a and the second open slot 150 b align with the first groove 156 a and the second groove 156 b.

In step 608, the device rack with the installed handle assembly and gusset brackets is tilted forwards to allow the wheel assembly to engage with the gusset brackets. In some embodiments, such as the embodiment shown in FIG. 1, the installer can use the handle assembly to tip the device rack forward, thereby allowing the wheel shaft 152 to slide into the diagonal portion of the first open slot 150 a and of the second open slot 150 b.

In step 610, the device rack with the installed handle assembly and gusset brackets is tilted backwards to allow the wheel assembly to fully engage with the gusset brackets. In some embodiments, such as the embodiment FIG. 1, the installer can use the handle assembly to tip the device rack backwards, towards himself, thereby allowing the wheel shaft 152 to slide into the horizontal portions of the first open slot 150 a and the second open slot 150 b until the wheel shaft 152 reaches the terminal ends of the first open slot 150 a and the second open slot 150 b. From this tilted position, the installer can push or pull the portable rack dolly system 100 while the weight of the portable rack dolly system 100 is substantially borne by the wheel assembly 118 and while the wheels 154 rotate making movement easier.

In step 612, the wheel assembly is removed from the device rack. In some embodiments, such as the embodiment shown in FIG. 1, removing the wheel assembly 118 can be completed using the first handle assembly 114 a and/or the second handle assembly 114 b to tilt the device rack forwards until the wheels 154 a and 154 b have been raised above ground. The installer can use his foot or other technique to withdraw the wheel assembly 118 from the first open slot 150 a and the second open slot 150 b. Then, the installer can tilt the portable rack dolly system 100 back down until the base 108 is flat on the ground and stable in place.

In step 614, the handle assembly and the gusset brackets are removed from the device rack. In some embodiments, such as the embodiment shown in FIG. 1, removing the first handle assembly 114 a and the second handle assembly 114 b, and removing the first gusset bracket 116 a and the second gusset bracket 116 b may be effected by removing the attachment mechanisms (such as the screws, bolts, or nuts and bolts). In some embodiments, the handle assembly and the gusset brackets may be left on the device rack, and only the wheel assembly is removed. In some embodiments, the gusset brackets may be left on the device rack, and the wheel assembly and the handle assembly are removed. Other methods are possible. 

The invention claimed is:
 1. A system configured to modify a device rack into a portable rack dolly, comprising: a wheel assembly, the wheel assembly including a wheel shaft, a first wheel rotationally coupled to the wheel shaft, and a second wheel rotationally coupled to the wheel shaft, the wheel shaft including a first shaft position and a second shaft position; a first bracket configured to be coupled to a device rack on a first side at a first low position, the first bracket including a first open slot configured to cooperate with the first shaft position on the wheel shaft, the first open slot including a first receiving portion configured to receive the wheel shaft at the first shaft position, a first delivery portion configured to deliver the wheel shaft upon tilting the device rack forwards, and a first locking portion configured to secure the wheel shaft upon tilting the device rack backwards; a second bracket configured to be coupled to the device rack on a second side at a second low position, the second bracket including a second open slot configured to cooperate with the second shaft position on the wheel shaft, the second open slot including a second receiving portion configured to receive the wheel shaft at the second shaft position, a second delivery portion configured to deliver the wheel shaft upon tilting the device rack forwards, and a second locking portion configured to secure the wheel shaft upon tilting the device rack backward; and a handle assembly coupled to the device rack, the handle assembly configured to support tilting the device rack forwards and backwards.
 2. The system of claim 1, wherein the wheel shaft includes a first groove at the first shaft position configured to engage with the first open slot, and a second groove at the second shaft position configured to engage with the second open slot.
 3. The system of claim 2, wherein a distance between the first groove and the second groove is the same as a distance between the first bracket and the second bracket when affixed to the device rack.
 4. The system of claim 1, wherein each of the first receiving portion and the second receiving portion includes an initial portion of the first open slot and the second open slot, respectively.
 5. The system of claim 1, wherein each of the first delivery portion and the second delivery portion includes a downwardly angled portion configured to allow gravity to drop the wheel shaft downward as the device rack is tilted forwards.
 6. The system of claim 5, wherein the downwardly angled portion includes a curved portion.
 7. The system of claim 1, wherein each of the first locking portion and the second locking portion includes a horizontal or upwardly angled portion configured to allow weight of the device rack to secure the wheel shaft as the device rack is tilted backwards.
 8. The system of claim 7, wherein the horizontal or upwardly angled portion includes a curved portion.
 9. The system of claim 1, wherein the handle assembly includes a first handle assembly attached to a first post and a second handle assembly attached to a second post.
 10. The system of claim 1, wherein the device rack includes telecommunication equipment.
 11. The system of claim 1, wherein a height of the first receiving portion and the second receiving portion is about the same as a height of the wheel shaft.
 12. The system of claim 1, wherein the first bracket includes a first gusset bracket and the second bracket includes a second gusset bracket.
 13. A portable rack dolly system, comprising: a device rack including a first post having a top end and a bottom end; a second post having a top end and a bottom end; a first crossbar attached across the first post and the second post; and a base attached to the bottom end of the first post and the bottom end of the second post, the base configured to maintain the device rack in a stable upright position; a wheel assembly, the wheel assembly including a wheel shaft, a first wheel rotationally coupled to the wheel shaft, and a second wheel rotationally coupled to the wheel shaft, the wheel shaft including a first shaft position and a second shaft position; a first bracket configured to be coupled to the device rack on a first side at a first low position, the first bracket including a first open slot configured to cooperate with the first shaft position on the wheel shaft, the first open slot including a first receiving portion configured to receive the wheel shaft at the first shaft position, a first delivery portion configured to deliver the wheel shaft upon tilting the device rack forwards, and a first locking portion configured to secure the wheel shaft upon tilting the device rack backwards; a second bracket configured to be coupled to the device rack on a second side at a second low position, the second bracket including a second open slot configured to cooperate with the second shaft position on the wheel shaft, the second open slot including a second receiving portion configured to receive the wheel shaft at the second shaft position, a second delivery portion configured to deliver the wheel shaft upon tilting the device rack forwards, and a second locking portion configured to secure the wheel shaft upon tilting the device rack backwards; and a handle assembly coupled to the device rack, the handle assembly configured to support tilting the device rack forwards and backwards.
 14. The portable rack dolly system of claim 13, wherein the wheel shaft includes a first groove at the first shaft position configured to engage with the first open slot, and a second groove at the second shaft position configured to engage with the second open slot.
 15. The portable rack dolly system of claim 13, wherein each of the first delivery portion and the second delivery portion includes a downwardly angled portion configured to allow gravity to drop the wheel shaft downward as the device rack is tilted forwards.
 16. The portable rack dolly system of claim 13, wherein each of the first locking portion and the second locking portion includes a horizontal or upwardly angled portion configured to allow weight of the device rack to secure the wheel shaft as the device rack is tilted backwards.
 17. The portable rack dolly system of claim 13, wherein the handle assembly includes a first handle assembly attached to the first post and a second handle assembly attached to the second post.
 18. The portable rack dolly system of claim 13, wherein a height of the first receiving portion and the second receiving portion is about the same as a height of the wheel shaft. 